Low-floor articulated railway vehicle bogie frame and bogie

Abstract

The invention relates to a low-floor articulated railway vehicle bogie frame and a bogie. The bogie frame is composed of two side beams, a central cross beam, two end beams and two mounting beams, wherein the two end beams are fixed to the two ends of the two side beams correspondingly, the two ends of the central cross beam are fixed to the middles of the two side beams, and the mounting beams are fixed to the outer sides of the side beams. The side beams and the mounting beams are each of a box-shaped structure formed by butt-welding of a top plate, a bottom plate and a rib plate, and the central cross beam and the end beams are each of an integrated cast structure. According to the bogie frame, the structure that steel plates and castings are combined and welded is adopted, the internal welding stress of the structure is minimized, the welding quantity is greatly reduced, the processing property and assembling efficiency of the bogie frame are improved, the strength, rigidity, fatigue resistance and bearing capacity of the whole structure of the bogie frame are greatly improved, and the requirement for safe operation of a high-speed railway vehicle is met.

Description

technical field [0001] The invention relates to a rail vehicle bogie frame, in particular to a low-floor articulated rail vehicle bogie frame, which belongs to the technical field of rail vehicle manufacturing. Background technique [0002] Low-floor urban rail vehicles play an increasingly important role in many urban traffic because of their advantages such as flexibility, convenience, strong adaptability, short construction period, low unit comprehensive cost and operating cost, and low-floor urban rail vehicles Among them, the bogie is the most important structural component, and its structure and various parameters directly determine the stability of the vehicle and the comfort of the ride. [0003] Due to the low floor of the existing 100% low-floor urban rail vehicles, the space under the vehicle is limited, which limits the design of the vehicle bogies. In addition, the existing 100% low-floor urban rail vehicle bogies generally have small curves and poor passing cap...

AI Technical Summary

Problems solved by technology

[0003] Due to the low floor of the existing 100% low-floor urban rail vehicles, the space under the vehicle is limited, which limits the design of the vehicle bogies. In addition, the existing 100% low-floor urban rail vehicle bogies generally have small curves and poor passing capacity , The floor surface is too high, it is difficult to get on and off the car, and the traction device is bulky, etc.

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